My university (in the United States) had a course code like this, except that it was allowed to be repeated so you could take it a number of times under the same course code.
UPenn has that. I took CIS 399 ("Special Topics in Computer Science") once as "Unix/Linux Skills" and once as a Python course. From googling I see that it's also been offered as "The Art of Recursion", "Open Source Software Development", and other titles. It is a half-credit course, i.e. half of a normal course.